As a result, the set_clock_latency -network option has no real use in the FPGA environment (at least I am pretty sure - I certainly have never come across a use for it) - it is included in the description of the command solely due to the fact that it is part of SDC. Avrum Expan...
Could anybody please share the SDC Command for setting clock latency for a "specific target clock". I am unable to find the correct SDC Command. -6.109(Setup Slack) ; APP-FPGA_Application_Logic:inst1|FilamentControl:inst30|PWM_Gen:inst1|\PWMControl:v_pulse_count_nom...
Note that you can retime an image after changing the .sdc. For example, take one of the failing designs. After compiling, remove the set_clock_latency from the .sdc and run TimeQuest. Hopefully something pops up as failing, and you know what the issue is. Translate 0 Kudos Copy ...
或者在DC 中开启ccd , 通过write_scripts 写出工具根据组合逻辑和你的设置推出来的tree长度脚本set_clock_latency -offset , 通过脚本转换set_clock_latency -offset 为标准set_clock_latency -clock xxx [get_pins xxx] SDC ,进入INNOVUS 优化。 或者INNOVUS 删除set_clock_latency 开启Cadence自己的useful skew EC...
set_clock_latency set_clock_latancy用于定于虚拟时钟与真实时钟的延时 考虑最糟糕的情况,评估setup时数据会使用最大延时,时钟使用最小延时;评估hold时,数据使用最小延时,时钟使用最大延时。
1.3 set_false_path和set_clock_groups区别 时钟之间的关系在静态时序分析(STA)中起着至关重要的作用。当前ASIC设计具有高度复杂的时钟方案。 1)时钟数量增多 2)不同的时钟产生电路 3)时钟域交互之间的交互 高效率的时钟关系约束才能产生高效率的STA。一个设计中可以存在许多时钟。但是,并非所有时钟都相互交互。必须...
关于set_clock_latency中的early和late选项 -early表示延时的可能最小值; -late 表示延时的可能最大值。 例如, set_clock_latency –source –late 1.234 sys_clk set_clock_latency –source –early 1.10 sys_clk … the board-level clock delay to sys_clk can be as late as 1.234ns and as early ...
当我使用set_clock_groups强制Vivado不检查这些路径时，我收到以下消息，表明它不能在同一个SLICE上放置...
SYNTAX status set_input_delay delay_value [-reference_pin pin_port_name] [-clock clock_name] [-clock_fall] [-level_sensitive] [-network_latency_included] [-source_latency_included] [-rise] [-fall] [-max] [-min] [-add_delay] port_pin_list Data Types delay_value float clock_name co...
Tcl Package and Version Belongs to ::quartus::sdc 1.5 Syntax set_input_delay [-h | -help] [-long_help] [-add_delay] [-blackbox] -clock <name> [-clock_fall] [-fall] [-max] [-min] [-reference_pin <name> ] [-rise] [-source_latency_included] <delay> <targets> ...